The reduction of calories in the diet is particularly good for people who suffer from

A．obesity

B．premature heart disease and diabetes

C．high blood pressure and cholesterol levels

D．all of the above

下列关于矢量图的描述不正确的是（）

A．矢量图任意放大不失真

B．矢量图可用Flash软件编辑

C．矢量图可用Windows XP自带画图软件编辑

D．矢量图可用CorelDRAW软件编辑